Optical bistability and multistability in four-level atoms with
a diamond configuration

Abstract

The phenomena of optical bistability and multistability are investigated for four-level
atoms with a diamond configuration trapped in a unidirectional optical ring cavity, driven
by a probe as well as three coupling fields. Moreover, the optical properties of the atoms
are studied considering the spontaneously generated coherence and Rabi frequencies. The
results indicate that the optical bistability and multistability of the corresponding
atom-cavity system can be controlled by two spontaneously generated coherences in upper
and lower decay channels and the Rabi frequency of the coupling fields.